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Questions and Answers
What is the phenomenon in which a changing magnetic field in a circuit induces an electromotive force (emf)?
What is the phenomenon in which a changing magnetic field in a circuit induces an electromotive force (emf)?
What happens to the induced emf in a coil when the rate of change of magnetic flux through it increases?
What happens to the induced emf in a coil when the rate of change of magnetic flux through it increases?
In electromagnetic induction, Lenz's law states that the direction of the induced current in a circuit is such that it:
In electromagnetic induction, Lenz's law states that the direction of the induced current in a circuit is such that it:
Study Notes
Electromagnetic Induction
- The phenomenon in which a changing magnetic field in a circuit induces an electromotive force (emf) is called electromagnetic induction.
- Electromagnetic induction occurs when there is a change in magnetic flux through a circuit.
Induced EMF
- When the rate of change of magnetic flux through a coil increases, the induced emf in the coil also increases.
- The magnitude of the induced emf is directly proportional to the rate of change of magnetic flux.
Lenz's Law
- Lenz's law states that the direction of the induced current in a circuit is such that it opposes the change in magnetic flux that induces it.
- The induced current flows in a direction that generates a magnetic field that counteracts the original change in magnetic flux.
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Description
Test your knowledge of electromagnetic induction with this Class 12 Physics quiz. Explore the phenomenon of induced electromotive force (emf) in circuits and understand the impact of changing magnetic flux. Delve into Lenz's law and its application in determining the direction of induced current.
